问题
单项选择题
If you are interested, we will send you a sample lot ______ charge.
A. within
B. for
C. free of
D. with
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
If you are interested, we will send you a sample lot ______ charge.
A. within
B. for
C. free of
D. with
参考答案：C